Centrifugal cream-tester



(No Model.)

P. V. P. BERG. GENTRIFUGAL CREAM TESTER.

No. 486,390 Patented Nov. 15, 1892.

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UNITED STATES PATENT OFFICE.

PETER VRA PO OLSEN BERG, OF ASKOR-VEJ EN STATION, DENMARK, ASSIGNOR, BYMESNE ASSIGNMENTS, TO OVIDIUS K. WVEEDFALD, OF PERTH AMBOY, ANDREINI-IOLDT J. PREISLER AND ADOLPH J. PREISLER, OF JERSEY CITY,

NE W JERSEY.

C ENTRIFUGAL CREAM-TESTER.

SPECIFICATION forming part of Letters Patent No. 486,390, dated November15, 1892.

Application filed November 27, 1891. Serial No. 413,341. (No model.)Patented in France March 17, 1887, No. 182,24=7i in Belgium March21,1887, No. 76,783; in Norway March 21, 1887,1711. 521 in England March25, 1887, No. 4,480, and in Sweden March 26, 1887,110. 1,458.

To all whom it may concern:

Be it known that 1, PETER VRA POOLSEN BERG, a citizen of the Kingdom ofDenmark, residing at Askor-Vejen Station, in the Province of Jutland,Denmark, have invented certain new and useful Improvements inCentrifugal Cream-Testers; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The invention has been patented as follows: in France, No. 182,247,dated March 17, 1887; in Belgium, No. 76,783, dated March 21, 1887 [5 inNorway, No. 521, dated March 21, 1887; in Great Britain,No. 4, 180,dated March 25, 1887, ald in Sweden, No. 1,458, dated March 26, 1 87.

This invention relates to devices for testing the amount of cream in anumber of vessels simultaneously by rotary motion; and it consists,chiefly, in the combination, with a rotary disk, of a series ofremovable cases or frames, each adapted to hold several testing-glasses,

2 5 the rotation of the said disk causing the said frames or cases totake a radial and horizontal position and the said frames or casesdropping into a vertical position when this rotation ceases.

The said invention further consists in the particular construction andcombination of parts hereinafter more specifically set forth andclaimed.

In the accompanying drawings, Figure 1 3 5 represents a front elevationof the cream-testing devices embodying my invention. Fig. 2 represents adetail perspective view of one of the frames or cases, and Fig. 3represents a similar View of the disk or shell.

A designates the main frame having a Hat peripheral part a and a raisedconcavo-convex middle part a, giving it the shape of a lowcrowned hat.In the said peripheral part are anumber of slots or openings a arranged45 in pairs to receive the hooks b of the frames or cases B. Each ofthese framesis provided with apair of these hooks on its inner or upperend and is open at this end for half or more than half itsbreadth. Theother end of the said case or frame is closed. The sides are in greatpartcutaway,leavinglarge openingsB,which allow convenient inspection ofthe testingtubes 0, that are set side by side in the said case or framewhile it is in its vertical position. This cutting away also makes thecases 5 5 lighter, and thereby lightens the cream-tester as a whole.Enough material is left around the said openings to hold the said tubessecurely.

In the sides of the raised part a of the main frame are two smallopenings of for receiving the hooked ends of abail E, whereby the saidmain frame may be lifted with any frames which may be attached thereto.\Vhen not in use the said bail hangs down on the said frame. The saidframe is provided with a central aperture a to enable it to fit on avertical shaft or axis for support and to allow rotation. The hooks band slots a practically make a hinged connection for the said frames;but these last may easily be removed when desired, the length of theslots allowing the hooks to be turned through them when the cases taketheir vertical position, and afterward to be lifted out of them. i

The operation is as follows: The testingtubes being filled with creamand packed into the cases or frames'and these latter being hung on themain frame in the position indicated by dotted lines in Fig. 1, the saidframe is then briskly rotated. As a result, the frames or cases take thehorizontal and radial position shown in Fig. 1 and the milk and creamseparate, the latter, by reason of its greater weight and momentum,being thrown toward the outer ends of the tubes and the cream remainingat the inner end thereof. When this action has continued long enough forentire separation, the rotation is stopped, and, there being no longerany centrifugal force at work, 0 the frames and testing-tubes fall intothe vertical position again with the cream at the top of the said tubes.These tubes may then be inspected through the openings B',or any one ofthe frames or casings B may be removed with its contents, or all of themmay thus be removed for comparison and refilling.

In the accompanying drawings, for greater clearness, only two of theframes are shown; but a complete set may be employed, radiating fromevery part of the shell A when in ac-- tion; but the two hooks will holdthe case or frame more firmly, guarding against any tendency to rockfrom side to side. Of course the shape of the frames and of the centralpart, which I have called the main frame, may vary considerably.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In combination with a central rotarypart, a set of frames or casesfor holding cream-testing tubes, the said frames being removably hingedto the said central part, and a bail also attached to the latter forlifting it, as described.

2. A tube-supporting case or frame provided with a hook or hooked endand an opening at this end and having openings in its sides for allowingthe inspection of creamtesting tubes within the said frame or case, thesaid hooked end serving for attachment to a central part capable ofrotation, substantially as set forth.

In testimony whereof I affix my signature in presence of two Witnesses.

PETER VRA POOLSEN BERG.

WVitnesses:

FR. BOUPE, F. PORTEFU BALMSIN.

